Anglers in Yellowstone National Park will see a slight increase in fishing permit fees this season to help enhance the park’s fisheries management program and to begin implementing conservation actions that were outlined in the 2011 Native Fish Conservation Plan. Among those actions is the removal of non-native lake trout in Yellowstone Lake which prey upon and reduce the population of cutthroat trout. Other activities include the restoration of cutthroat trout and Arctic Grayling in streams and lakes, exotic aquatic species prevention, and fish population monitoring. According to a park statement, the new fee structure will include a three-day permit for $18, a 7-day permit for $25 and an annual permit for $40. Current permit fees are $15, $20 and $35, respectively. Permits for anglers 15 years of age and younger will remain free. Yellowstone’s 2012 fishing season begins May 26th.